Stockholders' Equity (Schedule Of Changes In Stockholders' Equity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	May 02, 2012	Mar. 31, 2012	Mar. 31, 2011
Stockholders' Equity [Line Items]
Balance as of December 31, 2011		$ 126,816
Net income		17,807	16,247
Common stock issued from treasury stock		1,082
Common stock repurchased	(35,000)	(19,781)
Common stock repurchased, Shares Outstanding	(956,091)
Tax benefits from share-based awards		132
Non-cash share-based compensation		2,168
Dividends declared		(2,727)
Other comprehensive income		715	250
Balance as of March 31, 2012		126,212
Common Stock [Member]
Stockholders' Equity [Line Items]
Balance as of December 31, 2011		16,169
Balance as of December 31, 2011, Shares Outstanding		27,290,000
Common stock issued from treasury stock, Shares Outstanding		68,000
Common stock repurchased, Shares Outstanding		(553,000)
Balance as of March 31, 2012		16,169
Balance as of March 31, 2012, Shares Outstanding		26,805,000
Treasury Stock [Member]
Stockholders' Equity [Line Items]
Balance as of December 31, 2011		(2,524)
Common stock issued from treasury stock		34
Common stock repurchased		(277)
Balance as of March 31, 2012		(2,767)
Retained Earnings [Member]
Stockholders' Equity [Line Items]
Balance as of December 31, 2011		128,772
Net income		17,807
Common stock issued from treasury stock		1,048
Common stock repurchased		(19,504)
Tax benefits from share-based awards		132
Non-cash share-based compensation		2,168
Dividends declared		(2,727)
Balance as of March 31, 2012		127,696
Accumulated Other Comprehensive Loss [Member]
Stockholders' Equity [Line Items]
Balance as of December 31, 2011		(15,601)
Other comprehensive income		715
Balance as of March 31, 2012		$ (14,886)